Question for Sam Mac (others too!)

Darryl_MO · #1 01-19-2015, 07:58 PM

I too am having the dreaded 'ALT' indicator lighting up on my 1641. In the past it would come on when the PTO was engaged and then go out after running for a while. The last time I used the tractor the light was out but later the indicator light began to flicker and then came on solidly. Today I did the tests referenced in your quote to another member some time back. I got 28.2 (mostly, with some variation up to 28.8) volts at the yellow plug you mentioned. Close enough? This was with the engine running a bit below WOT. I know it's supposed to be 'AT' WOT but I kinda cringe to hear 'em scream like that, I usually run it about 3/4 throttle when mowing. I got nothing from the red wire coming from the VR so I'm assuming that's a failure and the VR needs to be replaced. Looking at the picture of the Kohler regulator in another of your posts on the same thread shows it marked with 41 403 09. Would that be the part number for the regulator? If not could you give me the number of the regulator to use for the conversion? Many thanks.

Darryl

Quote:
<< I'd check to see if you have about 30 volts AC at the plug to the VR. It's the square plug with the two red wires. Unplug it and put your test leads on the two pins inside the plug coming out from the engine. I'd also test to see if you have about 14 volts DC at the red wire on the existing regulator, it may be OK and you could have some other issue. Test before replacing stuff. If it turns out that your VR is bad you can use the leads from the old B&S VR just cut them at the green line in the pic, crimp on the spade connectors, I suggest that you use the insulated type. The yellow leads go to the outer terminals ant the red lead goes to the center. Think you will need a spacer to hold the VR away from the engine enough to clear the wiring. Make sure you have a good ground. >>